/Engine/Source/Developer/CollectionManager/Public/ICollectionManager.h
Returns a list of class paths found in the specified collection and share type
bool GetClassesInCollection ( [FName](API\Runtime\Core\UObject\FName) CollectionName, [ECollectionShareType::Type](API\Developer\CollectionManager\ECollectionShareType\Type) ShareType, [TArray](API\Runtime\Core\Containers\TArray)< [FTopLevelAssetPath](API\Runtime\CoreUObject\UObject\FTopLevelAssetPath) > & ClassPaths, [ECollectionRecursionFlags::Flags](API\Developer\CollectionManager\ECollectionRecursionFlags\Flags) RecursionMode ) const